underwater cave, ark survival evolved, prehistoric marine life, bioluminescent plants, coral reefs, ancient ruins, submerged artifacts, scuba diver character, exploring, high-tech gear, oxygen tanks, harpoon gun, schools of colorful fish, sharks, mosasaurus, anglerfish, jellyfish, crystal formations, stalactites, stalagmites, ambient light filtering through water, bubbles, murky depths, 3/4 view, dynamic lighting, detailed textures, realistic materials, immersive environment, wide-angle lens, sense of adventure.